基于SSPPs的低剖面宽带八木天线阵列设计  

Design of Low-Profile and Broadband Yagi Antenna Array Based on Spoof Surface Plasmon Polaritons

作　　者：杨少朋 蔡洋 薛谦忠[1,2] 席宝坤 YANG Shao-peng;CAI Yang;XUE Qian-zhong;XI Bao-kun(Key Laboratory of Science and Technology on High Power Microwave Sources and Technologies,Institute of Electronics,Chinese Academy of Sciences,Beijing 101400,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 101400,China;Space Engineering University,Beijing 101416,China)

机构地区：[1]中国科学院电子学研究所高功率微波源与技术重点实验室,北京101400 [2]中国科学院大学电子电气与通信工程学院,北京101400 [3]航天工程大学,北京101416

出　　处：《微波学报》2019年第5期13-17,22,共6页Journal of Microwaves

基　　金：国家自然科学基金(11475182)

摘　　要：提出了一种基于新型人工表面等离子体激元(Spoof Surface Plasmon Polaritons,SSPPs)馈电带有引向器的低剖面宽带八木天线阵列。天线阵列包括两部分:基于人工表面等离子体激元波导的四路宽带功分器和八木天线阵列。人工表面等离子体激元具有高的场局限性,将信号束缚在人工表面等离子体激元的凹槽结构中保证了信号的高效传输,减少了传输损耗。八木天线通过进一步加载引向器结构能够实现端射辐射特性。测试结果表明:天线阵列的回波损耗在4.5~6.05 GHz频率范围内小于-10 dB。天线阵列实际增益在4.5~6.05 GHz范围内最高可达11.1 dBi。In this letter,a novel spoof surface plasmon polaritons(SSPPs)-fed low-profile and broadband Yagi antenna array is proposed with director element.The antenna array consists of a wideband four-way power divider based on SSPPs waveguide and the Yagi antenna array.SSPPs has a characteristics of high field confinement,which tightly binds the signal to the groove structure of SSPPs to ensure efficient signal transmission and reduce transmission loss.The characteristics of the end-direction radiation are determined by the loaded director.The measured results demonstrate the antenna array works well in the frequency range from 4.5 GHz to 6.05 GHz that the magnitude of reflection coefficient maintains lower than-10 dB.The antenna array has a max actual gain 11.1 dBi in the range of 4.5-6.05 GHz.

关 键 词：人工表面等离子体激元 低剖面 宽带 八木天线 阵列 

分 类 号：TN8[电子电信—信息与通信工程]